Cuyamaca 100k Endurance Run is delaying the opening of registration by one month to 5/1/2020.  We hope that in the upcoming weeks, more information and guidance from our parks will allow us to more confidently accept your registrations and plan for the run on 10/3 this year.

We are also waiving qualification requirements in light of so many runs around the world being cancelled with little notice.

Thank you for your support and understanding.  If you have any questions please feel free to email me at  

Date: October 3, 2020

Race Headquarters: Camp Cuyamaca, Cuyamaca Rancho State Park

Entry: Limited to 250 entrants.  Any entrants beyond the first 250 may be added to the wait list if they wish.

Qualifications:  WAIVED THIS YEAR

Registration: See the registration page for detailed information.  The registration fee is $190. In the event that you must withdraw from the race, you are entitled to a refund of $150 before 7/01/20, and $100 before 9/1/20.

Race Start:  Saturday, October 3, 6:30 am.

Time Limit:  19 hour time limit with intermediate cutoffs.

Awards:  All entrants will receive a short-sleeved technical t-shirt and a full zip hoodie with our Cuyamaca 100k logo.  All finishers will receive a 100k medal.  The overall winners will get a free entry to next year's race, and 1-3rd place and masters winners will receive a unique hand-crafted award.

Course:  100 kilometers in Cuyamaca Rancho State Park.  A small portion of the race takes place in Anza Borrego State Park.

Aid Stations:Aid stations will have as a minimum: water, Tailwind Nutrition Sport Drink, Honey Stinger Energy Gels and Chews , fruit, salty foods/chips, sweets (cookies, candy, etc), and ice.  Night time aid stations will have soup, hot drinks, and sandwiches.

Race Sponsors: Tailwind Nutrition, Honey Stinger, Orange Mud, T8 Typhoon Wear, and Foot Kinetics. If you would like to become a Cuyamaca100k sponsor, please contact the race director at

Volunteering:  This type of event could not take place without the selfless efforts of the volunteer force.  If you would like to volunteer, please complete the form located here.  Volunteer duties may include course marking or sweeping, aid station help, road crossing marshals, parking management, etc..

Detailed information:  Detailed information covering the race rules, crew, directions, etc..Please read!!!

Driving from San Diego:
  • Head east on Interstate 8 out of San Diego.  After leaving El Cajon, drive about 20 miles further to CA-79/Japatul Valley Rd (exit 40)
  • Turn left and head north on CA-79/Japatul Valley Rd.
  • In 2.8 miles, turn left again to stay on CA-79. 
  • In 6 miles turn right into School Camp.